Footwear sole



FIG. 1 is a perspective view of a footwear sole embodying the new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof.

The broken lines show features that form no part of the claimed design. Further, the broken lines immediately adjacent to the solid line portions form a boundary of the claimed design, with the broken lines forming no part of the claimed design. 

CLAIM The ornamental design for a footwear sole, as shown and described. 